Pregnant Cows and Heifers Blood Profile Comparison

Abstract

This research is aimed to establish stress intensity in pregnant cows and compare it with metabolism load in heifers. This issue has been important due to significant intensification of dairy production in recent decades. The organism of a dairy cow is under a constant load, especially in heavy-yielding animals. Considering animal's needs and demands in high production environments is beneficial not only for continuous dairy and offspring production, but also for animal health and wellbeing. This study established that during the course of several lactations there is increase of an endogenous and exogenous stress level. It is important to monitor and reduce metabolic load by appropriate treatment and / or environment management. It is essential to monitor, prevent and when possible control metabolic distress, infectious diseases and high yield aftermaths in order to gain healthy and long lasting highly yield dairy herd and reduce culling.

Adaptability of Polish Red Cows to Extensive Feeding Conditions

“…The significantly higher (p ≤ 0.01; p ≤ 0.05) blood parameters in the cows tested in spring (March) in comparison to autumn may be linked to their advanced pregnancy, as cases of an increase in this parameter in cows during this period have been described. Kozitсyna et al [59] noted a successive increase in the total bilirubin concentration in cows from 6 to 9 months of gestation. The highest bilirubin concentrations, exceeding reference values, were noted immediately after parturition by Zhou et al [60] and persisted for about two weeks.…”